Door lock



July 15. 1924. 11,501,208

-S. R. FERGUSON noon LOCK Fi led Aug. 1 192 1 {Sheets-Sheet 1 AIIWY S.R. FERGUSON DOOR LOCK Filed g- 1921 2 Sheets-$heet 73 Br. W

Patented July 15, 1924.

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, Application filed August 1, 1921. Serial 110.488,!389.

T 0 all to 720m it may concern Be it known that I, STANLEY R. FERGUSON,a citizenof the Dominion of Canada, residing at Abernetln ,in the countyof Saltcoats and Y Province of- Saskatchewan, Canada, have inventedcertain new and useful Improvements in Door Locks, of which thefollowing is a specification.

The present invention relates to automatic door looks. The principalobject is to provide a simple and compact device of the characterdescribed which will automatically look when the door on which itispositioned is closed.

A further object is to provide a lock of the character described'whichmay be disengaged from the door frame by a straight pull exerted on thesaid door look.

A further object is to: provide a device of the character describedwhich cannot be opened by animals.

With these and other objects in view, the invention consists in theconstruction, combination and arrangement of parts as will behereinafter fully described, illustrated in the accompanying drawingsand pointed out in the claims hereunto appended.

Figure 1 is a perspective view illustrating my improved door lockembodied on a pair of barn doors.

Figure 2 is a transverse vertical section taken on line 22 of Figure 1and illustrating the construction of my improved door lock.

Figure 3 is a transverse cross section taken on line 3-3 of Figure 2.

Referring to the drawings, like numerals designate like parts in thevarious drawm s.

The numerals 4 and 5 illustrate the doors on which my improved lock ispositioned. 6 indicates the door frame. Referring to the lock member,the numerals 7 and 8 indicate the outer casing and have handles 9 and 10pivotally connected in them by pivots 11 and 12. Lever 13 is secured tothe pivot handle member 9. Lever 14 is fulcrumed on the pivot 15 and ispivotally connected at 16 to the handle member 10. The latch member 17is preferably square and has its ends configurated angularly asindicated diagrammatically. Apertures 18 and 19 are positioned in theouter casing 8 through which the latch member 17 reciprocates. The latchmember 17 is actuated by the handles 9 and 10 by means of the levers 13and 14 which inwardlyin the direction of the indicating arrow. The levermember 14 passing through the aperture 20 in conjunction with the lever13 also tensions .the handle 91-inwardly, as

indicated by the indicatingarrow. To pen mit movement of the. lever arm13, an opening 23 .is positionedrin the door-through which the saidlever passes. The angular end.24 of the latch member engages-With apocket 25 positioned inzthedoor frame.-

When the door is in open position and it is desired to lock the same,the door is first closed and the angular end 24 of the latch memberstrikes against the angular configuration 28 in the door frame. Theangular end 24 causes the latch member 17 to slide backward into thecasing 8. When the latch member passes the abutment 27 in the ocketmember 25, the retractile spring 21 t rows the latch member 17 forward,engaging the same in the pocket member 25.

When it is desired to open the door from the interior, the handle member9 is grasped and an outward tension exerted on the same. The levermember 13, being secured to the handle member 9, actuates with itsimultaneously and the latch member 17 is drawn inward by the downwardstroke of the lever member 13.

. When it is desired to open the door from the exterior, a tension isexerted on the handle member 10 and the same being pivotally connectedto the lower end of the lever imparts a simultaneous downward movementon the same, thus drawing the latch member 17 inwardly and disengagingthe same from the pocket member 25.

From the foregoing, it is thought that the construction of my inventionwill be clearly understood, and, therefore, a more extended explanationhas been omitted.

What I claim as new is:

1. A door lock of the character described comprising primary andsecondary outer casings, handle members pivotally mounted in the saidprimary and secondary outer casings, a latch member Ven gageable with apocket in the door frame and reciprocal in the said primary outercasing, means slidable through said latch member and engaging the saidlatch member with the said handle member.

2. A door lock of the character described comprising primary andsecondary outer casings, handle members pivotally connected in the saidprimary and secondary outer casings, a latch member engageable with apocketin the door frame and reciprocal in the said primary outer casing,means slidable through said latch member and engaging the said latchmember with the said handle member and means whereby the said. latchmember will normally project from the said'primary outer casing. I

3. A door lock of thecharacter described comprising in combinationprimary and-secondary outer casings, a handle pivotally con nected atone end in the said primary casing, a lever member fulcrumedintermediate its ends and pivotally connected on one end to thesaidhandle member, a handle member fulcrumed intermediate its ends in thesaid secondary casing, 'a 'lever substantially mounted on its upper end,the said lever members slidable through and engageable with the latchmember reciprocally positioned in the said prlmary outer casing andmeans exerting an outward tension on the said lever.

4. A door lock of the character described comprising in combinationprimary and secondary outer casings, a handle pivotally connected at oneend in the said primary casing, a lever member fulcrumed intermediateits ends and pivotally connected on one end to the said handle member, ahandle mem ber fulcrumed intermediate its ends in the said secondarycasing, a lever substantially mounted on its upper end, the said levermembersengageable with the latch member reciprocally positioned in thesaid primary outer casing and means exerting an outward tension on thesaid lever, said means comprismg a retractile spring connected at oneend to a relatively fixed member and on its opposite end to the firstmentioned said lever. v

In testimony whereof, I hereunto affix my signature in the presence oftwo witnesses.

STANLEY R. FERGUSON.

Witnesses N. B. XVILLIAMs, BARBARA S. WILLIAMS.

